package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    //登录
    @PostMapping("login")
    public R<Employee> login(HttpSession session, @RequestBody Employee e){
        //根据提交的用户名查询员工表
        LambdaQueryWrapper<Employee> lqw=new LambdaQueryWrapper<>();
        lqw.eq(Employee::getUsername,e.getUsername());
        Employee employee = employeeService.getOne(lqw);

        //员工不存在
        if(employee==null){
            return R.error("登录失败");
        }

        /*员工存在
        * 对提交的密码进行md5加密*/
        String password=e.getPassword();
        String pwd = DigestUtils.md5DigestAsHex(password.getBytes());


        /*判断密码是否正确*/
        //密码错误
        if(!pwd.equals(employee.getPassword())){
            return R.error("登录失败");
        }

        /*密码正确
        * 判断账号是否禁用*/
        //账号已禁用
        if(employee.getStatus()==0){
            return R.error("账号已禁用");
        }

        //账号未禁用,登录成功,将员工id存入Session
        session.setAttribute("employee",employee.getId());
        return R.success(employee);
    }

    //退出
    @PostMapping("logout")
    public R<String> back(HttpSession session){
        //删除登录成功保存的session
        session.removeAttribute("employee");
        return R.success("退出成功");
    }

    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());

        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        /*employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());*/

        //获得当前登录用户的id
        //Long empId = (Long) request.getSession().getAttribute("employee");

        /*employee.setCreateUser(empId);
        employee.setUpdateUser(empId);*/

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    @GetMapping("page")
    public R<Page> page(int page,int pageSize,String name){
        Page pageInfo=new Page(page,pageSize);
        LambdaQueryWrapper<Employee> lqw=new LambdaQueryWrapper<>();
        lqw.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        lqw.orderByDesc(Employee::getUpdateTime);
        employeeService.page(pageInfo,lqw);
        return R.success(pageInfo);
    }

    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        Long empId = (Long)request.getSession().getAttribute("employee");

        /*employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);*/
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        if(employee!=null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }

    @DeleteMapping
    public R<String> delete(Long id){
        return null;
    }
}
